{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Multidrug resistance - associated proteins are involved in the transport of the glutathione conjugates of the ultimate carcinogen of benzo [ a ] pyrene in human Caco - 2 cells ."}
{"Chemical": ["glutathione", "benzo [ a ] pyrene"]}